Grading notes
Strike is part of the diagnosis.
Judge wear at the eagle breast, wing feathers, serpent, cactus, LIBERTAD band, and central rays only after accounting for weak strike, die wear, and adjustment marks.
Representative Republican issue study
1885/75 Go RR Overdate 8 Reales
The 1885/75 Go RR registry slot is retained as a documented overdate identity, not reduced to a generic 1885 coin. The underlying digits are an attribution diagnostic; they are not a mintage or rarity estimate.
A mature diagnostic study selected from the complete matrix; neighbouring records stay matrix-only until they pass the same gate.
Verified image pendingNo neighbouring date, mint, or type is substituted
1885/75Date
GoMintmark
RRAssayer mark
Unknown — not zeroMintage
Historical and mint context
1885/75 Go RR Overdate 8 Reales
The 1885/75 Go RR registry slot is retained as a documented overdate identity, not reduced to a generic 1885 coin. The underlying digits are an attribution diagnostic; they are not a mintage or rarity estimate.
GoGuanajuato Mint
RRContextual assayer mark
KM 377.8Catalog crosswalk
1Normalized matrix rows
Unknown — not zeroReported mintage
Attribution diagnostics
Read the complete identity before grade or price.
- Confirm the 5 over 75 structure under magnification before assigning the variety.
- Match Go and RR to the late Guanajuato hub family.
- Reject altered-date conclusions based only on one raised line; compare the whole punch geometry.
| Date | Mint | Assayer | Design generation | Variety classes | Confidence |
|---|---|---|---|---|---|
| 1885/75 | Go | RR | Late Republic regional hub families | overdate | specialist-registry |
Authentication notes
Check cumulative compatibility.
Check the complete date–mint–assayer combination, die style, 27.07 g nominal standard, diameter tolerance, security edge, and .903 silver standard. This page is not a substitute for professional authentication.
Population and market evidence
No unsupported price or population snapshot.
No population total, survival estimate, or grade-price table passed the normalized, dated, multi-source publication gate.
Sources
Issue identity and series context.
- Mexican 8 Reales, Circulation Strikes (1823–1897): Set CompositionPCGS Set Registry · tier 2 · 2026-07-21
1,112 date–mint–assayer–variety registry slots used as the primary issue-matrix crosswalk. Registry weights are not rarity estimates.
- 8 Reales – Mexico (N# 7394)Numista · tier 2 · 2026-07-21
Discovery and cross-check only: nominal 27.07 g, .903 silver, 38.9 mm reference diameter, security edge, orientation, and mint-level KM family suffixes.